Universe 00-00-00 (Also known as The Origin, The Immortal Universe, or The Great Collapsed One) is an amalgamation of every universe that was gravitationally pulled into the very center of SNAZ OS.
Creation
By the end of the Genesis Canon, Universe 00-00-00 was formed once The Aether's membrane began to weaken due to the sheer size and volume of SNAZ OS. Once the barriers separating the soon-to-collide universes were fully disintegrated, the first cross-universe collision-scale event took place in the dead center of SNAZ OS, forming the first dual-jointed universe that had two of each planet, star, and galaxy. Doubling the size of a universe additionally doubled it's aetheric gravitational pull, causing an exponential collision-caused growth of Universe 00-00-00.
Extended Canon
"SNAZ OS has simply hit a limit it can no longer push, and the consequences of this is becoming a dire situation that is too far in its progression to be stopped by anyone or anything, even The Originless." -The Archamind of the Sartex
The creation of Universe 00-00-00 marks the beginning of the end of SNAZ OS, with all events leading up to SNAZ OS's ultimate collapse taking place in the Extended Canon. Early in this process, the Bloodmind and Nyral Wyrms joined the scene, given that Universe 00-00-00 now presented major security vulnerabilities in the underlying framework of reality itself.
Universe 00-00-00 is a heatsink for Chaos. It drags Chaos into itself, adding onto its' mass.
The Chaos Theory
Once Universe 00-00-00 had absorbed 400 universes, the inhabitants of The Great Collapsed One had formed a theory about how Chaos was a double-edged sword. In it, they wrote the following:
"Chaos is the one thing saving us from our ultimate destruction, but it too is the very thing destroying us. We've gone past a safe cap of it in here, and we can only see things getting worse from here. We're killing ourselves under the premise of wanting to not have 'dupes' running around and taking our places. We've just found the amalgamation of two Milky Ways that joined together, and the amount of life that is fighting amuck for resources is a terrifying concept. We've seen humans with Sartex-level technology, Sartex at a still somewhat-primitive tech stage... To go further beyond the 'soft cap' of Chaos is the real definition of insanity."
Nyral Wyrms & Bloodmind Exploit
Universe 00-00-00 houses the cross-universe persistent hiveminds, and the presence of Nyral Wyrms in outside galaxies is a key warning sign that the outside universe has entered Universe 00-00-00's gravity well.
The universe also serves as the linking point for the Bloodmind, hence why Bloodmind Incursions happen so frequently within Universe 00-00-00.
The Great Collapse
At the end of SNAZ OS's life, every single universe is now within Universe 00-00-00, which stops new Glitch Entities from entering the universe, as the walls are stronger and thicker than the original size of SNAZ OS. However, the universe is more comparable to a singularity, and now the Originless avoid the event horizon of the universe.